Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 342 PM EDT Thu Jul 26 2018 Valid 00Z Fri Jul 27 2018 - 00Z Sun Jul 29 2018 ...Heavy rains to impact far northern New England... ...Risk of flash flooding and severe weather for the central/southern Rockies and central High Plains into this weekend... ...Dangerous heat to continue across the Southwest and along the West Coast through Friday... The heavy rain that has plagued the Mid-Atlantic has finally moved off shore and dry conditions have settled in during the day today. Meanwhile, the northern extent of the cold front has now moved into New England, and is resulting in heavy rain and thunderstorms across this area. A slight risk of flash flooding will be possible through tonight, mainly across Maine, with precipitation quickly tapering off by dawn as the cold front continues eastward in this area. On the other hand, the southern extent of the front has become stalled and will remain in place along Southeast coastline, resulting in continued chances for showers and thunderstorms in these areas. Another round of showers and thunderstorms will occur along a secondary cold front originating from the Upper Great Lakes region, and extending southeast into the Southern Plains. This front will continue to track south and east, eventually taking over the current coastal front as it stalls and weakens. The Storm Prediction Center has outlined portions of the Lower Great Lakes and northern Ohio Valley as being in a slight risk of severe thunderstorms this afternoon through overnight. Shower and thunderstorm potential will then shift eastward with the front, impacting much of the mid-Atlantic and New England yet again for Friday and Friday night. The Storm Prediction Center has included much of this region in a slight risk for severe thunderstorms for Friday as well, while the Weather Prediction Center has outlined a marginal risk of excessive rain and flash flooding across portions of New York and Pennsylvania during this time. The central and southern Rockies will continue to receive rounds of heavy showers and thunderstorms over the next few days. Some of these storms could be severe and could produce heavy rainfall that may lead to flash flooding--especially over favored terrain and recent burn scars. For the rest of today and into the overnight, the best threat of excessive rainfall and severe thunderstorms will continue to concentrate across the eastern slopes of the Southern and Central Rockies. By Friday, this threat will shift into the central High Plains where it will remain through Saturday. The Storm Prediction Center has outlined a slight risk of severe thunderstorms for today, and has increased to an enhanced risk of severe thunderstorms across the western Central Plains for Friday. The dangerous heat will persevere through at least Friday as temperatures across the Southwest, California and parts of the Pacific Northwest continue to be well above average. Areas in the Southwest and southern California can expect high temperatures near and above 110 degrees. Excessive heat warnings and heat advisories remain in effect for these regions, and will also lead to Air Quality concerns, especially in the higher populated areas. Because of these hot and dry conditions, fire weather will also remain a concern across the western U.S. Wix Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php